pthread_attr_setdetachstate man page on OSF1

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pthread_attr_setdetachstate(3)			pthread_attr_setdetachstate(3)

NAME
       pthread_attr_setdetachstate  - Changes the detachstate attribute in the
       specified thread attributes object

SYNOPSIS
       #include <pthread.h>

       int pthread_attr_setdetachstate(
	       pthread_attr_t *attr,
	       int detachstate );

LIBRARY
       DECthreads POSIX 1003.1c Library (libpthread.so)

STANDARDS
       Interfaces documented on this reference page conform to industry	 stan‐
       dards as follows:

       IEEE Std 1003.1c-1995, POSIX System Application Program Interface

PARAMETERS
       Thread attributes object to be modified.	 New value for the detachstate
       attribute. Valid values are as follows: This the default value. Threads
       are  created  in	 “undetached”  state.	The created thread is detached
       immediately, before it begins running.

DESCRIPTION
       This routine changes the detachstate attribute in the thread attributes
       object specified by the attr argument. The detachstate attribute speci‐
       fies whether the thread created using the specified  thread  attributes
       object  is  created in a detached state or not. A value of PTHREAD_CRE‐
       ATE_JOINABLE indicates the thread is  not  detached,  and  a  value  of
       PTHREAD_CREATE_DETACHED	indicates the thread is detached. PTHREAD_CRE‐
       ATE_JOINABLE is the default value.

       Your program cannot use the thread handle (the value of type  pthread_t
       that  is	 returned  by  the  pthread_create(3)  routine) for a detached
       thread because the thread might terminate asynchronously, and a	thread
       ID  is  not  valid  after termination. In particular, it is an error to
       attempt to detach or join with a detached thread.

       When a thread that has not  been	 detached  completes  execution,  DEC‐
       threads	retains	 the  state  of that thread to allow another thread to
       join with it.  If the thread is detached before it completes execution,
       DECthreads  is  free  to	 immediately  reclaim the thread's storage and
       resources. Failing to detach threads that have completed execution  can
       result  in  wasting resources, so threads should be detached as soon as
       the program is done with them. If there is no need to use the  thread's
       handle after creation, create the thread initially detached.

RETURN VALUES
       If  an  error  condition	 occurs, this routine returns an integer value
       indicating the type of error. Possible return values  are  as  follows:
       Successful  completion.	The  detached  state  attribute is returned in
       detachstate.  The value specified by the attr argument is not  a	 valid
       thread attributes object or the detachstate argument is invalid.

ERRORS
       None

SEE ALSO
       Functions:     pthread_attr_init(3),    pthread_attr_getdetachstate(3),
       pthread_create(3), pthread_join(3)

       Manuals: Guide to DECthreads and Programmer's Guide

						pthread_attr_setdetachstate(3)
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